PSLE
A fruit stall sold coconuts at 90¢ and dates at 60¢ each. Opal bought some coconuts and Kathy bought some dates from the stall. Opal spent $1.20 more than Kathy, but had 3 fruits fewer than Kathy.

1. How many coconuts did Opal buy?
2. How much did Kathy spend on the dates?

	Coconuts	Dates
Number	1 u	1 u + 3
Value	0.9	0.6
Total value	0.9 u	0.6 u + 1.8

(a)
Number of coconuts that Opal bought = 1 u
Number of dates that Kathy bought = 1 u + 3

Amount that Opal paid = 0.9 x 1 u = 0.9 u
Amount that Kathy paid = 0.6(1 u + 3) = 0.6 u + 1.8

If Kathy spent another $1.20, both Kathy and Opal would spend the same amount.

0.9 u = 0.6 u + 1.8 + 1.2
0.9 u - 0.6 u = 1.8 + 1.2
0.3 u = 3

1 u = 3 ÷ 0.3 = 10

Number of coconuts that Opal bought
= 1 u
= 10

(b)
Amount that Kathy spent on the dates
= 0.6 u + 1.8
= 0.6 x 10 + 1.8
= 6 + 1.8
= $7.80

Answer(s): (a) 10; (b) $7.80